Ventilator



0. C. MANN.

v ENTlLATOR.

APPLICATION msn FEB. s. 191s.

Patented Aug. 19,1919.

@rw 0M ab was UNITED sTATEs PATENT oEEIoE.

ORVILLIE` C. MAN N, OF OAK PARK, ILLINOIS.

VENTILATOB,

Specification of Lettersatent. Patented Allg. 19, 1919 Application led February 5, 1918. Serial No. 215,489.

To all whom t may concern:

Be it known thatI, OBVILLE C. MANN, a citizen of the United States, residing at Oak Parlnin the county of Cook and State of Illinois, have invented new and useful Improvements in lVentilatore, of which the following is a specification, reference being vhad to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide an improved device of the nature of a window ventilator, that is, a device adapted to be mounted in a window opening for Ventilating the apartment to which the window pertains. lt consists in the elements and features -of construction shown and described in the drawings as indicated in the claims.

In the drawings Figure 1 is a vertical section through the wall of a room and window casing therein which is equipped with a device embodying this invention, the device itself being shown in transverse vertical section.

Fig. 2 is a section at` the line 2-2 on Fi l.

ig. 3 is a section at the line 3 3 .on Fig. 1.

Fig. 4 is a detail section of the lower bar ofthe sash e uipped -with a device constituting a mod' cation of one feature of this invention. i

Fig. 5 is a detail section in the same plane as the section of Fig. 2, showing one corner of the box and the window stop to which it is secured, provided with a spacing plate.

`In the drawings a window casing of coml mon construction for a vertically sliding sash is shown at 1, the lower side bar of the casing being shown at 2, extendin outwardly wlth an inclined upper face as s ownl at 2, formin the outer or weather sill; 3, is the inner sillbehind which the lower vertical sliding sash shuts; 4, is said sash shown artly elevated for use of the ventilator. ghe Ventilating device consists of a box, 5,

referably constructed of sheet metal as illustrated, having one vertical side open substantially the whole length of the box, and the whole width except as to the longitudinal upper inner corner member, 6, of the box, and having the top open the whole length, and the entme width 'except as to so much as is occupied by said up er inner longitudinal corner member, 6. he ends, 7, 7, of the box -l`.are connected bysald corner member and lby the back or bottom member 7b, which is inclined upwardly and inwardly and curved concave inwardly, that is, toward the cavity of the box, as seen in Fig. 1. The ,longitudinal side opening, 8, is provided with a closure, 9, which is hinged to the lower inner longitudinal corner of said longitudinal corner member, 6, Vand swings down inwardly from its open position, shown in full line 1n Fig. l, to its closed position, shown in dotted lines in said ligure. Said closure is connected with said corner member, 6, by sprin hinges, 10, l0, of'usual construction adapte by their springs to uphold said closure at the open position shown in F ig. l, and at that position i-t is stopped 'in the lower edge of the corner member,'6, which is beveled or formed with its lower edge in 'a plane inclined slightly downward and outward, the inclination corresponding and conforming to the customary inclination of the outer sill, 2, and of the beveled lower edge of sash, 4, which seats on said inclined sill. By reason of this inclination of the closure, 9, at its open position it serves as a deflector for rain falling when the closure is open, preventing it from drainin back into the box. It will be understoo that the closure by reason of its inclination is intended to prevent rain driving into the box even when the closure is open, and of course to exclude` water from the box when the closure is closed. The top opening at 12, is provided with a screen cover, 13,.hinged at its inner edge to the upper side of said corner member, 6, and stopped when closed by an inturned flange, 7, extending along the upper marginfof the back member, 7b. Preferably, the corner member, 6, is made of considerable width, amounting in practice to about an inch, .so that the closure, 9, hinged at the inner lower longitudinal corner of said corner member may be readily operated by the sash, 4, in the closing movement of the latter for closing said closure by the encounter of the lower inner corner of the sash with the upper outer surface of said closure at a sufficient distance from its hin e to afford adequate leverage forclosin 1t against resistance of the spring hinges. referably, to save the sash from the wear atsaid corner, Wlich would" otherwise directly encounter the closure in said closing operation, round headed screws, 11, may be inserted in the lower edge of the. sash substantially at the forward corner; and the closure, 9, both for the purpose of stiftening it and also to aord a track forthe edge of the screws, is formed with transverse grooves, 9a, fitted to accommodate said round headed screws.

By reason of the concavely curved back, 7b, of the box, the current of air entering through the device is deflected from hori zontal to vertical direction so that it emerges upwardly through the screen cover at the opening in the top of the box. In order to adapt the device to relieve the incoming air to some extent of the dust which it may carry, there. isprovided a partition or false bottom or back, 1G, made of sheet metal with flanges turned on the upper and lower edges for lodging upon and spacing it away from the true back or bottom member,` 7", forming a pocket or dust receptacle between said back and said false bottom; said false bottom has a multiplicity of apertures, 17, each formed by striking the metal out and folding it up to form a lip 17a projecting from the upper margin of the aperture, which additionally serves to arrest the dust and causes it to be deflected behind the false bottom and retained in the pocket formed thereby.

Instead ofthe closure member, 9, hinged at the side of the box there may be provided for certain of the functions performed by said closure member a mere deflector pla-te 18 shown in Fig. 4 secured by screws at the lower edge of the sash, 4, and projecting outwardly at the inclination of said lower edge, and preferably at its outer edge having a flange, 18a, turned downwardly, the width of said plate being suflicient to cause it at the closed position of the sash to completely cover the exposed surface of the outer sill, 2, thereby, besides its other functions, serving as a protection against fire from sparks which might be lodged on the wooden sill. It will be seen that this plate performs the functions of deilecting the rain and guarding the ventilator against access of rain thereto, and also that in this form of the device as in that shown in Figs. 1. and 2, the

ventilator is automatically opened and closed by the opening and closing of the sash.

It will be noticed that the' back member, 7", is flanged downwardly atits lower edge for engagement. against the outer edge of the sill, 3, thus making the device serve as a protection against in-driving rain whether the sash is closed or open, andthe inclined position of the back member, 7b, will cause any water which may drive into the box to drain out immediately, even though it might drive in so far as to pass through one of the apertures 17, in the false bottom, the lower flange, 127", of that false bottom having notches in its lower edge, one of which is shown at 17", to permit the escape of any water which may be driven into the dust pocket.

For convenience in fitting these ventilators to Windows of all widths, they will of course be madein a plurality of sizes; but to reduce the number of different sizes required, the unit differences in length between consecutive sizes may be, say, three or four inches, and the flange, 7 d, at the outer edge of each side plate, 7 will then be made two or three inches wide and may be trimmed offl with shears to reduce the total width including the flanges to that of the casing which is to be fitted. When the nearest size available for a given casing is such that a space would l remain between the side plate, 7, and the side stop or sash-retaining strip, 14, of the casing, so that a screw, as 15, for securing the device would not bind the plate, 7 against the side stop, there will be employed a filler plate, 20, having flanges, 20, turned up on two adjacent edges and provided with rivet holes for securing it to the side plate, 7 and its ange, 7d, as seen in Fig. 5; and this `filler plate will be provided along the inner edge with a series of screw holes, 20", at'distances from center to center not more than the usual thickness of the side stop, 14. This filler plate will be trimmed to the same width as the flange, 7d, inserted under the end ofthe side stop, 14, (first removed and trimmedfor the purpose), and 4secured by a screw through the outermost hole left standing after -trimming the filler plate, engaging it securely with the sill.

1. In combination with a window casing and a vertically sliding sash therein, a box approximating in length the width of the 105 sashopening in the casing, having openings extending longitudinally in one vertical side and in the top, said box having a re- Y movable partition extending longitudinally and inclined upwardly from the lower side 110 of the opening in the lower side of the box toward the inner side of the opening in the top of the box, and having apertures each provided with a lip extending inwardly from its upper margin.

2. In combination with a window casing, a ventilator box for mounting at the sash opening having openings extending longitudinal y in one vertical side and in the top, having a third longitudinal side extending 120 obliquely with respect to the top and outer side, and a removable false back or partithe dust from the in-coming air current is corner of said member, andadapted toswing v deiected. upward and outward through said openin 3. In combination with a window casing, and be stopped against the vunder slde o? a ventilator box for mountin at the sash said corner member at a position extending 5 opening, having a longitudina 1y extending outwardly and downwardly. i 15 opening in the outer vertical side, the box In testlmony whereof, I have hereunto set comprising a longitudinal corner member at my hand at Chicago, Illinois, this 31st day the junction of the sideand top 5. a closure of January, 1918. for said opening in the vertical slde hinged y 10 -to said corner member a-t the lower inner ORVILLE C. MANN. 

